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Java File Handling
Question 1
Which package contains the File class in Java?
- A
java.io.file
- B
java.file
- C
java.io
- D
java.nio.file
Question 2
Which Hibernate method is used to insert/save a new object into the database?
- A
update()
- B
merge()
- C
save()
- D
delete()
Question 3
In Hibernate, which method is used to remove an object (entity) from the database?
- A
remove()
- B
delete()
- C
evict()
- D
detach()
Question 4
What is the purpose of the createNewFile() method in the File class?
- A
To open an existing file
- B
To create a new directory
- C
To create a new file if it does not exist
- D
To delete a file
Question 5
What will file.exists() return if the file doesn’t exist?
- A
true
- B
false
- C
null
- D
Throws Exception
Question 6
Which of the following can read text from a file line-by-line in Java?
- A
FileWriter
- B
BufferedWriter
- C
Scanner
- D
PrintWriter
Question 7
What is the output of this code?
File f = new File("demo.txt");
System.out.println(f.isDirectory());
Assume demo.txt is a file, not a folder.
- A
true
- B
false
- C
null
- D
Compilation Error
Question 8
Which method is used to get the size of a file in bytes?
- A
getSize()
- B
getLength()
- C
length()
- D
size()
Question 9
What does delete() method of the File class return when deletion fails?
- A
Throws an exception
- B
Returns false
- C
Returns null
- D
Returns the file name
Question 10
What is the correct way to create a directory in Java?
- A
File.mkdir()
- B
File.createDirectory()
- C
File.createDir()
- D
File.makeDirectory()
There are 12 questions to complete.
